Closes the gap where recurring_error suggestions showed generic 'Investigate'
instead of the curated recommendation. Added a covers[] field to SolutionPattern
(lowercase substrings a pattern's recommendation also applies to) + Catalog.find_for
(exact key first, then covers match against signal key+locus). Retro now resolves
recommendations through find_for. Tagged the read-before-edit pattern with
covers=['file has not been read','modified since read','file_not_read'] (v1.0.1).
Live: file-not-read suggestions across all repos now inherit 'Read the file before
Edit/Write'. 6 new tests; suite 158/158.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
tegwick
e237dcc622